the data does indicate that tamiflu has any effect. it is not over-dramatic, but positive. host: a question from g.o. on twitter. will we see a revisit of the pandemic of 1918? guest: that is a $1 billion question. in 1918 you had the worst infectious disease pandemic, really, of the past several hundred years. between 50,000,100 million people died around the world -- 50 million and 100 million people died around the world. scientists have been able to recreate what it was about that strained and help us understand what happened, but of all the disease threat to distill influenza that gives us a concern. it is why we have a global warming system -- global system to track the world if new strains are advancing. that is why we have the medications that we think have some, not miracle, but modestly effective action and could be helpful, particularly when used early and air important for people with severe disease or underlying illness. the possibility of a large pandemic is something we always have to be ready for. it might be the flu or another infectious disease, but we hav